Lymphocyte Immunotyping

This is a blood test used to detect CD4 T lymphocytes. These are blood cells which are associated with an increased likelihood of complications of AIDS when they become reduced to a critical level. They also indicate if an AIDS patient is at risk for developing an opportunistic infection. An opportunistic infection is one that takes advantage of the body and uses this opportunity of low T-lymphocytes to cause an infection. The T-lymphocytes are helpful in the immune response in the body to fight off disease.

PREPARATION FOR TEST

No preparation or fasting is necessary.

NORMAL FINDINGS

  • T cells: 60-95%, 800-2,500/microliter

  • T helper cells (CD4): 60-75%, 600-1,500/microliter

  • T suppressor cells (CD8): 25-30%, 300-1,000/microliter

  • B cells: 4-25%, 100-450/microliter

  • Natural killer cells: 4-30%, 75-500/microliter

CD4/CD8 ratio: Greater than 1

Ranges for normal findings may vary among different laboratories and hospitals. You should always check with your doctor after having lab work or other tests done to discuss the meaning of your test results and whether your values are considered within normal limits.

MEANING OF TEST

Your caregiver will go over the test results with you and discuss the importance and meaning of your results, as well as treatment options and the need for additional tests if necessary.

OBTAINING THE TEST RESULTS

It is your responsibility to obtain your test results. Ask the lab or department performing the test when and how you will get your results.